Add ShouldDisplayOverFullscreen support to web notifications.

chrome/browser/notifications/notification_test_util.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/notifications/notification_test_util.h"
 
+#include "chrome/browser/ui/browser.h"
+#include "chrome/browser/ui/exclusive_access/exclusive_access_context.h"
+#include "content/public/test/test_utils.h"
+
 MockNotificationDelegate::MockNotificationDelegate(const std::string& id)
     : id_(id) {}
 
 MockNotificationDelegate::~MockNotificationDelegate() {}
 
 std::string MockNotificationDelegate::id() const { return id_; }
 
 // -----------------------------------------------------------------------------
 
 StubNotificationUIManager::StubNotificationUIManager() {}
@@ skipping 111 matching lines @@
 bool StubNotificationUIManager::CancelAllByProfile(ProfileID profile_id) {
   NOTIMPLEMENTED();
   return false;
 }
 
 void StubNotificationUIManager::CancelAll() {
   for (const auto& pair : notifications_)
     pair.first.delegate()->Close(false /* by_user */);
   notifications_.clear();
 }
+
+FullscreenStateWaiter::FullscreenStateWaiter(
+    Browser* browser, bool desired_state)
+    : browser_(browser),
+      desired_state_(desired_state) {}
+
+void FullscreenStateWaiter::Wait() {
+  while (desired_state_ !=
+      browser_->exclusive_access_manager()->context()->IsFullscreen()) {
+    content::RunAllPendingInMessageLoop();
+  }
+}